Type-writing machine.



A. l. BRIGIGS.l

TYPE WRITING MACHINE. APPLICATION FILED Auehzs. |916.

, Patented Oct. 9, 1917.

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, EEE!" A? VM-5 HIE ATTIJRNEY A. l. BRIGGS.

TYPE WRITING MACHINE.

APPLlCATlON FILED AUG.28. 1916.

1,242,41 9. Patented o... 9, 1917,.

3 SHEETS-SHEET 2.

W.' H15 ATTURNEY A.. I. BRIGGS.

TYPE WRITING MACHINE.

APPLICATION FILED UG.28. |916. 9,

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VWTNEEEEE UNITED sTATEs PATENT Aonirica.

y ARTHUR J. muses., oF sYnAcUsn, NEW YORK, AssIGNoE 'ro EEMINGTONTYPE-WEITER. COMPANY, 0F ILIoN, NEW YORK, A CORPORATION or NEW YORK.

TYPE-WRITING MACHINE.

Specification of Letters Patent. f

Patented oct. e, 1917'.

Application filed August 28, 1916. Serial o. 117,257

To all whom 'it may concern.'

Be itvknown that I, ARTHUR J. BRIGGS, citizen of the United States, andresident of Syracuse, in the county of Onondaga and State of NewXorkVhave invented certain` new and useful Improvements in Typey-Writing Machines, of whichthe following is a specification.

My invention relates to typewriting machines and more particularly tothe carriage feed mechanism of lsuch machines. Said mechanism isl shownin the present instance incorporated in a typewriting machine which,considered as a whole, has combined therein in an unusual degree thecharacteristics of merit and low cost of manufacture, and it is theprincipal object of the present invention to produce a carriage feedmechanism having these characteristics.

To the above and other ends which will hereinafter appear, my inventionconsists in certain features of constructionI and combinations andarrangements of parts, all of which will be fully set forth hereinandparticularly pointed out in the claims.

In the accompanying drawings,

Figure 1 is a front to rear vertical sectional view upon an irregularsection of as muchof the complete machine asis necessary to illustratethe embodiment therein of the present invention. A

Fig. 2 is a rear elevation of the same.

Fig. 3 is an enlarged perspectlve v1ew of the carriage feed mechanism asseen from the back, and

Fig. 4 is a perspective view of parts f said mechanism as seen from thefront.

In all of lthe views parts have been omitted or broken away or shown 1nsection, as has been found convenient.

It will be -understood that the present 1nvention is capable ofembodiment 1n whole or in part, in machines differing in many re- I wall2, which extends around three sides of a rectangle and a. short distanceacrossthe back of the machine at each side, and sald frame ralsocomprises right-and-left-hand top plates 3. Said frame also includes aAmain casting comprising a carriage rail 4 and a type bar segment 5.Said castin also comprises two side posts 6 and a cross ar 7 in the baseof the machine, where said casting is fastened to the base 1y by meansof' screws 8.

The frame valso comprises a cross bar 10, said bar consisting `of aseparate casting suitably secured in the base 1. Said frame is morefully shown and described and is claimed in my application for LettersPatent filed August 28th, 1916, Serial No. 117,261. l

The type action comprises printing keys 11 mounted on the forward endsof key levers 12 which are pivoted on a wire 13 seated in the cross bar7, which barA is slotted along its under edge to guide the key levers.Each of the key" levers has a, depending arm 14 to which isconnected arestoring spring 15 andy all of said springs are secured to a channelbar .16 in the base of tlfe 'machine A series of sub-levers 17 ofbellcrank form are guided in slots in the cross bar 10 and pivoted on apivot wire or rod 18. Each of said bell-cranks has a forwardly extendingarm `carrying a headed pin 20 which plays in a slot 21 in the forwardpart of a key lever 12. Each of said sublevers is connected bya link 22'with a front strike type bar 23 carrying a type 24. Said type bars arepivoted on a wire 25 suitably` laid in the type bar segment 5, theforward face of which is slotted to guide the type bars. The types 24are adapted to strike` against the front face` of the platen 26 which ismounted ina carriage 27 having the form y shown in Figs. 1 and 2, thatis to say, it has two grooved rails for the accommodation ofantifriction balls 28, one of said rails being horizontallyv in fron-tof the other. The rail 4 has its forward face grooved to match theforward rail Nof the carriage and a grooved rail 30 is secured to therearface of the bar 4 to coperate with the rear ball or balls 28. Therail 30, as here shown, is made of sheet metal with sufficientresiliency to obviate the necessity of any relative adjust- 36 which isjournaled in the rail part 4 of the main casting, in a manner which willbe more particularly described hereinafter.

A universal bar 37 is operated by the type bars near the pivotal ends ofthe latter and. said universal bar consists of a segmentshaped channelbar of sheet metal mounted above and within the type bar segment 5 inposition to be struck by suitably flattened portions 38 of the severaltype bars. Said universal bar is mounted on and wholly supported by thefrontof a sheet metal plate or frame 40 to which it is secured as byrivets 41. The frame or plate 40 has a flat part lying horizontallybeneath the rail 4 and its forward end is suitably bent to conform tothat part of the universal bar 37 which is secured to it. The plate 40nearl its forward part is of substantial width and it has bent uptherefrom two ears 42, one at the right and one at the left edgesthereof and these ears are pivoted at 43 to the upstanding arms 44 cfabail or yoke frame, which frame comprises a connecting bar 45 extendingin a right and left-hand direction beneath the plate 40. Between saidcross bar and said plate a rod 46 extends through the arms 44 andconstitutes the pivot of the bail or yoke frame, to which end said rodalso extends through vertically disposed partsof a stationary frame orbracket 47 which is secured by means of screws 48 to the under side ofthat part of the main casting which also constitutes the carriage rail4. lt will be seen that the bail 44, 45 is mounted on two pivots spaceda sufficient distance apart in a right-and-left-hand direction to insurethat both ends of the universal bar shall move alike. rl`he rod 46 ishere shown with a small head on one end and its other end split andspread after the fashion of a Cotter-pin to retain it in place.

ln rear of the forward pivots just above described the plate 40 has anear 50 bent up therefrom so as to stand in a fore and aft verticalplane, and this ear constitutes one of the d-ogs of the escapement, itsupper rear corner standing normally as shown in Figs. 1 and 2, a littlein front of the esa capement wheel 35 and in such position thatv whenthe universal bar is moved toward the rear this dog passes between. twoof the teeth of the escapement wheel. This vertical ear is alsoutili-Zed as a support for the rear part of the plate 40, to which endsaid ear is pivoted at 51 to thel prolonged. upper end of an arm 52 of abail', which bail also comprises a horizontal bar 53, Fig. 2, and asecond arm 54 shorter than the arm 52. Above the cross bar 53 the arms52, 54 are pivoted on a rod or wire 55, which rod also passes throughears 56 bent up from a rearward extension of the bracket 47. rlhe bailbar 53, as here shown, is much shorter than the forward bail bar 45, andthe former bail.

rateale is connected with the plate 40 at only one point, 51, instead ofat two, as in the case of the forward bail. lit will be seen that theuniversal bar has a three-point support of such character as to cause itto move substantially directly toward the rear when struck by a typebar, and of such character as to guide it for parallel and equal motionin all its parts.

rlhe bracket 47 is struck up out of a single piece of sheet metal andcomprises a flat horizontal part of irregular outline, as shown, and twoend pieces bent up vertically and thence horizontally, forminghorizontal ears through whichthe screws 48 pass. The right-hand verticalpart of this Ybracket has an arm 57 projecting inwardly therefrom andthe universal bar plate 40 has an ear 58 at the rear end, which isconnected with the arm 57- by a spring 60 tending to draw the universalbar toward the front of the machine and constituting the restoringspring of the escapement mechanism.

lt will be perceived that the universal bar is supported entirely by thesheet metal plate 40, which has an ear 50 bent up therefrom andconstituting one of the feed dogs of the escapement, and that said plate40 is supported by the bracket 47. As will more fully appear hereinafterthe entire escapement mechanism, except they escapement rack or wheel,is supported by this bracket 47, and can be removed from the machine byremoving the two screws 48. This mechanism, including the universal baritself, is assembled outside of the machine in the process ofmanufactureand is placed in position in the machine as an entirety.

The second escapement dog 61 is pivoted, by a pivot 62, to an ear. 63bent up from the rear end of the plate 40 so that it stands in avertical transverse plane. The dog 61 has a tooth 64 bent 0E therefrominto a fore and aft vertical plane, and said tooth en gages the teethofthe escapement wheel 35. rlhis tooth 64 stands, as seen in Fig. l,just at the rear of the dog 50, and, as seen in Fig. 2, it is off-setfrom the dog 50 to a suflicient extent to enable said dog 50, when the.universal bar is moved toward the rear of the -machine, to move' intoposition to' engage the next tooth of the wheel 35 succeeding the onejust released bythe tooth 64. The relation of these two escapement dogs`can, of course, be varied, but, as here shown, the carriage is adaptedto have a little more than a half drop on the positive n could beintegral with the plate 40, but lt` have shown said dog pivot-ed on Athepivot l62 in order to enable the carriage to be released by moving saiddog out of the wheel and also 1n order vto enable the carriage to bepulled back' to the right in which operation the dog 61, 64 has theaction of a` pawl, yielding to the teeth of the wheel and snapping inbehind them. Tothis end the dog is controlled by a wire spring 65, whichV is secured to the under side of the plate 40 by means of a screw 66,Fig. 1, and which passes through a hole in a depending arm.

frontbar 72 of a U-shaped or bail-shaped frame which also includes twolong levers 73 extending to the back of the machine and each of themhaving a depending part which is pivoted 0n the same wirel or rod 18that constitutes the pivot of the sub-levers. The space bar and itsframe are controlled by two restoring springs 74 each connected at 75 toone of the levers 73 and each also connected to the stationaryframework.' Suitable padded stops 76 Imounted on the front part 'of theframe, act to limit the upward and downward motion of the space bar,said stops playing between parts o`f'the base 1.

Each of the levers' 73 has at its rear endv a laterally projecting pin77 and said pins lie behind inclined cam arms 78 depending from a vrockshaft or pivoted frame 80.I This frame consists essentially of ananglebarjlying across the back of the machme and at each end having anear 81 bent up therefrom and into said ears are threaded or otherwisesecured pins 82 which pass through sheet metal brackets 83 suitablymounted on lugs of the main casting 6, 7. At its middle the bar hasprojecting upward therefrom an arm 84, the upperend of whichy passesthrough a slot in the horizontal part of the plate 40 asvwill beunderstood from Fig. 1.

The whole construction is such that Vif the lspace bar 70 be depressedthe pins 77 moving Aupward will rook the arms 78 toward the front of themachine, and the arm 84 toward -the rear of the machine thus operat-Ting the escapement; and if said escapement be operated by the type vbarsthen the arm 84 and bar 80 will be rocked but without alecting the spacebar 70. The bar 80, in

actual ractioe inthe particular machine shown in the drawings, isalso'utilized to feed the ink ribbon, but this is not shown nor claimedherein. As shown in the present instance the arm 78 and ears 81 areintegral vparts ofl the angle bar 80, which angle bar is stamped out ofsheet metaland bent up into the form shown. The arm 84 is shown composedof two parts, the lower `part of which is integral with .the bar 80 andthe upper part of which isriveted thereto, but

it will, of course, be understood that all of this construction can bevaried.

The carriage release mechanism includes ra release key or finger piece85, Figs. 1 and 3, consistin of a bent-oil' and 'suitably formed 'partof a long sheet metal bar 86 mounted for sliding motion on the back ofthe carriage 27. As shown in the present instance this bar has a flange87 bent off toward the rear from its lower edge, partly to stiiien thebar and partly to furnish a wider contacting surface for the coperatingpart. The bar 86 has two parallel slotsl 88, one near each end and bothinclined upward and toward the operators left, and

through these slots extend headed pins 90, the forward ends of which aresecured in brackets or ears 9.1 of the carriage 27. A spring 92 pullsthe bar 86 toward the operators left, the left-hand end of said springbeing connected with an ear 93 projecting upward from the carrage. Theconstruction is suchthat the bar normally occupies itsy left-hand andupper position. Pressure on the finger piece moves the .bartoward theleft and downward, all parts of the bar moving downward to 4the sameextent. Said bar 86 operates a lever 94 which is pivoted at 95 on abracket 96 consisting of a branch of the right-hand one of the twovertical parts of the Stationary bracket 47, the bracket 96 being bentinto a transverse plane and extending upward behind the wheel 35. Thellever 94 is here shown with three arms, one of which extends from thepivot 95 upward and toward the operators right, being thence bent towardthe front of the machine forming an ear 97 which lies under the flangeor rib 87 of the bar 86 in such position that when said bar is moveddownward by an operation ofthe finger piece 85 the said ear -willbemoved downward and the lever 94 will be rocked toward the operatorsright. The ear 97, as here shown, has a` lug 99 projecting therefrom.The lever 94 also has a downward extending arm having an ear 98 bent'offtherefrom toward the rear of the machine and this ear is adapted .tooperate an arm 100 of the feed dog 61, said arm extending upward fromthe pivot ofsaid dog, and being bent toward the rear of the machine asshown. The whole construction is such that when the finger piece 85 isoperated the lever 94 is rocked and the dog 61 is depressed against thetension of the spring 65 out of engagep ment with'the wheel 35 and thecarriage can then be moved to an indefinite extent in front and backdirection as that it does notV lose control of the arm 100 at any 'timethe vibration of the universal barduring As here shown the dog 61,

and feed dogs.

lever 94 and bar 86 are all stamped up out of sheet metal, making themvery inexpensive to manufacture and at the same time they are sucientlysubstantial and are ecient inuse.

The machine as here shown is equipped ywith a ribbon vibrator 102consisting of a suitably formed ribbon guide standing in front of theplaten and having a long stem, the lower end of which is pivoted at 103on a lever arm 104, Fig. l.' rlhis lever arm is integral with the bail52, 53, 54, and it co sists simply ofa forward prolongation of the crossbar 53v of said bail, said prolongation. having an ear 105 bent uptherefrom vand through which the pivot pin 103 passes. rllhe vibrator102 has 'ears 106 bent o". therefrom and coperating with a stationaryguide plate 107 whichis secured bymeans of screws 108 to the front faceof the part 4 of the main casting. v 'llhe stem of the vibrator 102asses through a hole 109 in the plate 40. his ribbon mechanism isnotclaimed herein but is claimed in another application filed August 28th,1916, Serial No. 117,258, rlhe'guide plate 107, however, performs afunction in connection with the escapement mechanism as follows: rllheshaft 36 of the escapement Wheel 35 is reduced where it enters thecasting 4 so that just at the rear of said casting there is a shoulderon the shaft 'which prevents motion of the shaft toward the front of themachine. Said shaft passes entirely through the castin 44 and near itsforward end it is formed with a groove 110 andthe plate 10T is formedwith a notch -111 which engages in said groove andl prevents endwisemotion of the shaft 36. rlhe construction is such that when the machineis assembled this shaft is held against endwise motion but with freedomto turn, but upon removing the guide 107 by loosening the two screws 108the shaft is then free to be slipped out of its bearing toward the rearand thus removed from the machine. ltwill be perceived that theconstruction is very simple and inexpensive and that it is one that canbe assembled with a minimum of labor and trouble. ln this last operationthe escapement wheel shaft is simply thrust into its bearing openingfrom the rear andthe ribbon guide is put in place and fastened by thetwo screws 108 which thus hold in place said guide, the upper end of theribbon vinaeeaie which they should move in operation and yet Y are rigidagainst the action ofthe escapement/ wheel, and that their constructionisV such as to make the parts easily assembled and easily removed fromthe machine. liny short, the construction is at once good andinexpensive, and the same is true of the space key and releasingmechanisms.

Various changes can be made in the details of construction andarrangement without departing from my invention.

What l claim as new and desire to secure by Letters Patent, is: A

1. lin a typewriting machine, the combination with front strike typebars; of a universal bar in position to be operated by said type bars, aframe on which said universal bar is supported, oscillatory framespivoted to said supporting frame and guiding it for parallel and equalmotion in all its parts, feed dogs carried by said supporting frame, anda rack.

2. ln a typewriting machine, the combination of a supporting framemounted for bodily motion front and back, a universal bar whollysupported by the front part of said frame, and a feed/dog whollysupportedI by the rear part of said frame.

y 3. ln a typewriting machine, the combination with the carriage; of ahorizontal reciprocatory frame beneath/the carriage, a rocking framehaving two arms' at a distance apart and each pivoted to saidreciprocatory frame, .a third arm pivoted tol said reciprocatory frame,the three said arms acting to support said reciprocatory frame, asegmental universal bar carried by a forward projection of saidreciprocatory frame, and a feed dog also carriedby said reciprocatoryframe.

4. ltn a typewriting machine,-the combination of a bracket detachablymounted on the main framework; a reciprocatory frame mounted in saidbracket for bodily motion front and back; a segmental universal barcarried by said reciprocator frame; and a feed dog also carried by saldreciprocatory frame; the construction bein such that Vsaid frame,universal bar, dog an bracket can be removed from the machine as anentirety.

5. lln a typewriting machine, the combination with front strike typebars, a carriage and an escaplement rack; of. a stationary bracket detacably mounted beneath the carriage; a rocking frame pivoted to saidbracket; a horizontal plate mounted on said rocking frame for bodilymotion front and back, and having an extension` toward the front of themachine; a segmental universal bar carried by said extenslon in positionto be operated by said'type bars; and means carried by the rear part ofsaid plate for cooperation with said escapementrack.

6. In a typewriting machine, the combination with type bars,A of a sheetmetal plate mounted for bodily reciprocation, a universal bar carried bysaid plate and in position to Vbe operated by said type bars, a eed dogconsisting of an ear bent up from said plate, and a second feed dogpivoted to said plate.

7. In a typewriting machine, the combination with. front strike typebars, a carriage.

and an-escapement rack; of a stationary bracket detachably mountedbeneath the,

carriage; a rocking frame pivoted to said bracket; a horizontal platemounted on said rocking frame for bodily motion front and back, andhaving an extension toward the front of the machine; a segmentaluniversal bar carried by said extension in position f to be operated bysaid type bars; means carried by the rear part of said plate forcooperation with said escapement rack; a lever pivoted on said bracketin position to move said means out of engagement with said rack; and ahand operated bar on said carriage coperating with said lever.

8. In a typewriting machine, carriage feed mechanism comprising auniversal bar, a sheet metal plate constituting the support for saiduniversal bar and having an ear bent up therefrom and constituting anescapement dog; a space key; and a levery operated by said space key andhaving an arm thereof engaging said plate.

9. In atypewritin Ymachine, the combination with front stri e type bars,of a universal bar in osition to be operated by said type bars; a rameon which said universal bar is supported; oscillatory frames pivoted tosaid supporting frame and guiding it for parallel and equal motion inall its parts; feed dogs carried by said supporting frame; a space key;and a lever operated' by said pace key and engaging said supportingrame.

10. In a typewriting machine, the -comi bination with front strike typebars, of a universal bar in position to be operated .by

said type bars; a sheet metal plate mounted for a bodily motion. frontand back, and constituting the sup ort for said universal bar; feed dogscarrie by said plate; 'aspace key; and an arm operated by said space keyand engaging a slot in said plate.

11. In a typewriting machine, the combination with front strike typebars, of a universal bar in position to be operated by said type bars; ahorizontal frame mounted in rear of said 'universal bar and constitutinga support for said universal bar; a space key; levers in the base of themachine supporting said space key; a rock shaft or frame extendingacross the back of the machine and having arms engaged by said levers;and an arm projecting upward from said rock shaft or frame and engagingsaid universal bar support.

12. In a typewriting machine, the combination of a carriage, a feed rackon said carriage, a feed pinion, an escapement wheel, la shaft forv saidpinion and wheel, said shaft extending forward through the stationaryframework of the machine and havin a groove in its forward end, and aslotte plate secured to the stationary framework and engaging insaidgroove.

13. In a typewrlting machine', the combination of a carriage, a feedrack on said carriage, a feed pinion and escapement wheel controllingsaid rack, a shaft for-said pinion and wheel, said shaft extendingthrough a part of the stationary framework, a ribbon vibrator, a guidefor said vibrator,

and means whereby said guide prevents end-r ARTHUR J. BRIGGS. Witnesses:AUGUSTUS J. BARNES FRANK S. Lewis.

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